"cybernetic" is from the same Greek word that was the root of "govern" and all related forms of the word, and describes the field of directly controlling the actions and behaviors of things through technologic means.

A "cybernetic organism", or "cyborg", is an organism that is partly or entirely controlled by technological add-ons. A "cybernetically enhanced organism", on the other hand, is one that uses the technology to control itself and augment its own abilities.